I just want to point out that you shouldn't forget those behind you. As soon as you can fan out and get out of the way of the people behind you, the faster those people move, and the faster the people behind them reach the door.
A huge part of this problem is that when people get to the bottle neck that's slowing everyone down and making everyone go single file, people take their time getting through it. That's exactly when you need to hurry up and get the fuck out of the way.
It only takes a couple of people to waddle slowly off the plane to set everyone else up to wait several minutes before they can reach the front. And the problem is compounding.
So, what I'm saying here is, stay the fuck out of the way when you're not engaging in the activity of walking off the plane. If you're packing shit up, pulling out your luggage, putting on a sweater or backpack, stand in an isle and let everyone past while you fumble around. When you get off the plane don't stop and stretch and stare at the lights or whatever, move to the side or keep moving at a brisk pace away from the door until you get into a clearing where people can easily move around you.
None of this will make deplaneing fast, but the focus is on not making any slower than it has to be.